When not to use grade 8 bolts?

Could you elaborate on the scenarios where it would be inadvisable to utilize grade 8 bolts? Are there specific applications or conditions where their strength and durability might actually be detrimental, or where a lesser grade bolt would be more suitable? Understanding when not to use grade 8 bolts is crucial for ensuring the safety and efficiency of various structures and assemblies, so it's important to have a clear picture of these potential limitations.